You're building multi-agent AI systems. Agent A calls Agent B. Agent B calls Agent C. Every one of those calls is an API request protected by... what? API keys? mTLS? Good luck. Here's what happens when you use human security for autonomous agents. 1. No human approval loop A compromised human API key triggers alarms when 10,000 requests happen at 3am. A compromised agent can make 10,000 requests in 3 minutes. By the time you notice, the damage is done. 2. Machine speed Humans make deliberate calls. Agents make thousands per minute. A misconfiguration doesn't slowly leak — it explodes. 3. Delegation chains Agent A calls Agent B calls Agent C. Your API key travels the whole chain. One compromised link, and everything downstream is exposed. 4. Ephemeral identity Agents spin up and die constantly. Static API keys don't map to ephemeral processes. Teams end up with one key for "all agents" — a nightmare to rotate or revoke. Not API keys. Not mTLS alone. You need: Identity that's cryptographically verifiable offline Authorization baked into every call, not checked at the door once Scope that limits exactly which actions an agent can take Audit that traces delegation chains, not just individual calls And you need all of it to add less than 2ms of latency — because agents don't wait. Figure: The four layers of Codios Midlantics A2A security — Identity, Authorization, Scope, and Audit. We built Codios — cryptographic authorization for AI agents. Ed25519-based identity that verifies in ~0ms Capability contracts that carry identity, scope, and expiry together Full audit trails across delegation chains TypeScript and Python SDKs with Express/FastAPI middleware It's the authorization layer your multi-agent system is missing. → codios.midlantics.com You can use Codios and ship today. If you're running AI agents in production and worried about security, let's talk.